<?php
/**
 *  基本图片处理，用于完成图片缩入，水印添加
 *  当水印图超过目标图片尺寸时，水印图能自动适应目标图片而缩小
 *  水印图可以设置跟背景的合并度
 *
 *  Copyright(c) 2005 by ustb99. All rights reserved
 *
 *  To contact the author write to {@link mailto:ustb80@163.com}
 *
 * @author 偶然
 * @version $Id: thumb.class.php,v 1.9 2006/09/30 09:31:56 zengjian Exp $
 * @package system
 */

/**
 * ThumbHandler
 *
 * @access public
 */

/*
 * 使用方法: 自动裁切: 程序会按照图片的尺寸从中部裁切最大的正方形，并按目标尺寸进行缩略 $t->setSrcImg("img/test.jpg");
 * $t->setCutType(1);//这一句就OK了 $t->setDstImg("tmp/new_test.jpg");
 * $t->createImg(60,60); 手工裁切: 程序会按照指定的位置从源图上取图 $t->setSrcImg("img/test.jpg");
 * $t->setCutType(2);//指明为手工裁切 $t->setSrcCutPosition(100, 100);// 源图起点坐标
 * $t->setRectangleCut(300, 200);// 裁切尺寸 $t->setDstImg("tmp/new_test.jpg");
 * $t->createImg(300,200);
 */
class Cms_ImageDispose {
	private $dst_img; // 目标文件
	private $h_src; // 图片资源句柄
	private $h_dst; // 新图句柄
	private $h_mask; // 水印句柄
	private $img_create_quality = 100; // 图片生成质量
	private $img_display_quality = 80; // 图片显示质量,默认为75
	private $img_scale = 0; // 图片缩放比例
	private $src_w = 0; // 原图宽度
	private $src_h = 0; // 原图高度
	private $dst_w = 0; // 新图总宽度
	private $dst_h = 0; // 新图总高度
	private $fill_w; // 填充图形宽
	private $fill_h; // 填充图形高
	private $copy_w; // 拷贝图形宽
	private $copy_h; // 拷贝图形高
	private $src_x = 0; // 原图绘制起始横坐标
	private $src_y = 0; // 原图绘制起始纵坐标
	private $start_x; // 新图绘制起始横坐标
	private $start_y; // 新图绘制起始纵坐标
	private $mask_word; // 水印文字
	private $mask_img; // 水印图片
	private $mask_pos_x = 0; // 水印横坐标
	private $mask_pos_y = 0; // 水印纵坐标
	private $mask_offset_x = 5; // 水印横向偏移
	private $mask_offset_y = 5; // 水印纵向偏移
	private $font_w; // 水印字体宽
	private $font_h; // 水印字体高
	private $mask_w; // 水印宽
	private $mask_h; // 水印高
	private $mask_font_color = "#ffffff"; // 水印文字颜色
	private $mask_font = 2; // 水印字体
	private $font_size; // 尺寸
	private $mask_position = 0; // 水印位置
	private $mask_img_pct = 50; // 图片合并程度,值越大，合并程序越低
	private $mask_txt_pct = 50; // 文字合并程度,值越小，合并程序越低
	private $img_border_size = 0; // 图片边框尺寸
	private $img_border_color; // 图片边框颜色
	private $_flip_x = 0; // 水平翻转次数
	private $_flip_y = 0; // 垂直翻转次数
	
	private $cut_type = 0; // 剪切类型
	
	private $img_type; // 文件类型
	
	public $debug;
	
	// 文件类型定义,并指出了输出图片的函数
	private $all_type = array ("jpg" => array ("output" => "imagejpeg" ), "gif" => array ("output" => "imagegif" ), "png" => array ("output" => "imagepng" ), "wbmp" => array ("output" => "image2wbmp" ), "jpeg" => array ("output" => "imagejpeg" ) );
	
	/**
	 * 构造函数
	 */
	function ThumbHandler() {
		$this->mask_font_color = "#ffffff";
		$this->font = 2;
		$this->font_size = 12;
	}
	
	/**
	 * 取得图片的宽
	 */
	function getImgWidth($src) {
		if ($src) {
			return imagesx ( $src );
		} else {
			$this->debug = "无法取得图片宽度，图片不可用";
			return false;
		}
	}
	
	/**
	 * 取得图片的高
	 */
	function getImgHeight($src) {
		if ($src) {
			return imagesy ( $src );
		} else {
			$this->debug = "无法取得图片高度，图片不可用";
			return false;
		}
	}
	
	/**
	 * 设置图片生成路径
	 *
	 * @param $src_img string
	 *       	 图片生成路径
	 */
	function setSrcImg($src_img, $img_type = null) {
		if (! file_exists ( $src_img )) {
			$this->debug = "图片不存在";
			return false;
		}
		
		if (! empty ( $img_type )) {
			$this->img_type = $img_type;
		} else {
			$this->img_type = $this->_getImgType ( $src_img );
		}
		
		$this->_checkValid ( $this->img_type );
		
		// file_get_contents函数要求php版本>4.3.0
		$src = '';
		if (function_exists ( "file_get_contents" )) {
			$src = file_get_contents ( $src_img );
		} else {
			$handle = fopen ( $src_img, "r" );
			while ( ! feof ( $handle ) ) {
				$src .= fgets ( $fd, 4096 );
			}
			fclose ( $handle );
		}
		if (empty ( $src )) {
			$this->debug = "图片源为空";
			return false;
		}
		$this->h_src = @ImageCreateFromString ( $src );
		$this->src_w = $this->getImgWidth ( $this->h_src );
		$this->src_h = $this->getImgHeight ( $this->h_src );
	}
	
	/**
	 * 设置图片源
	 */
	function setImageSrc($src_img, $src_type = 'STRING', $img_type = null) {
		if ($src_type == 'STRING') {
			if (! empty ( $img_type )) {
				$this->img_type = $img_type;
			} else {
				$this->img_type = $this->_getImgType ( $src_img );
			}
			
			$this->_checkValid ( $this->img_type );
			
			if (! empty ( $src_img )) {
				try {
					$this->h_src = @ImageCreateFromString ( $src_img );
					// dump($this->h_src);exit;
					if (! $this->h_src) {
						return false;
					}
					$this->src_w = $this->getImgWidth ( $this->h_src );
					$this->src_h = $this->getImgHeight ( $this->h_src );
					return true;
				} catch ( Exception $e ) {
					$e;
					return false;
				}
			}
		}
		return false;
	}
	
	/**
	 * 设置图片生成路径
	 *
	 * @param $dst_img string
	 *       	 图片生成路径
	 */
	function setDstImg($dst_img) {
		$arr = explode ( '/', $dst_img );
		$last = array_pop ( $arr );
		$path = implode ( '/', $arr );
		$this->_mkdirs ( $path );
		$this->dst_img = $dst_img;
	}
	
	/**
	 * 设置图片的显示质量
	 *
	 * @param $n string
	 *       	 质量
	 */
	function setImgDisplayQuality($n) {
		$this->img_display_quality = ( int ) $n;
	}
	
	/**
	 * 设置图片的生成质量
	 *
	 * @param $n string
	 *       	 质量
	 */
	function setImgCreateQuality($n) {
		$this->img_create_quality = ( int ) $n;
	}
	
	/**
	 * 设置文字水印
	 *
	 * @param $word string
	 *       	 水印文字
	 * @param $font integer
	 *       	 水印字体
	 * @param $color string
	 *       	 水印字体颜色
	 */
	function setMaskWord($word) {
		$this->mask_word .= $word;
	}
	
	/**
	 * 设置字体颜色
	 *
	 * @param $color string
	 *       	 字体颜色
	 */
	function setMaskFontColor($color = "#ffffff") {
		$this->mask_font_color = $color;
	}
	
	/**
	 * 设置水印字体
	 *
	 * @param $font string|integer
	 *       	 字体
	 */
	function setMaskFont($font = 2) {
		if (! is_numeric ( $font ) && ! file_exists ( $font )) {
			$this->debug = "字体文件不存在";
			return false;
			// die("字体文件不存在");
		}
		$this->font = $font;
	}
	
	/**
	 * 设置文字字体大小,仅对truetype字体有效
	 */
	function setMaskFontSize($size = "12") {
		$this->font_size = $size;
	}
	
	/**
	 * 设置图片水印
	 *
	 * @param $img string
	 *       	 水印图片源
	 */
	function setMaskImg($img) {
		$this->mask_img = $img;
	}
	
	/**
	 * 设置水印横向偏移
	 *
	 * @param $x integer
	 *       	 横向偏移量
	 */
	function setMaskOffsetX($x) {
		$this->mask_offset_x = ( int ) $x;
	}
	
	/**
	 * 设置水印纵向偏移
	 *
	 * @param $y integer
	 *       	 纵向偏移量
	 */
	function setMaskOffsetY($y) {
		$this->mask_offset_y = ( int ) $y;
	}
	
	/**
	 * 指定水印位置
	 *
	 * @param $position integer
	 *       	 位置,1:左上,2:左下,3:右上,0/4:右下
	 */
	function setMaskPosition($position = 0) {
		$this->mask_position = ( int ) $position;
	}
	
	/**
	 * 设置图片合并程度
	 *
	 * @param $n integer
	 *       	 合并程度
	 */
	function setMaskImgPct($n) {
		$this->mask_img_pct = ( int ) $n;
	}
	
	/**
	 * 设置文字合并程度
	 *
	 * @param $n integer
	 *       	 合并程度
	 */
	function setMaskTxtPct($n) {
		$this->mask_txt_pct = ( int ) $n;
	}
	
	/**
	 * 设置缩略图边框
	 *
	 * @param
	 *       	 (类型) (参数名) (描述)
	 */
	function setDstImgBorder($size = 1, $color = "#000000") {
		$this->img_border_size = ( int ) $size;
		$this->img_border_color = $color;
	}
	
	/**
	 * 水平翻转
	 */
	function flipH() {
		$this->_flip_x ++;
	}
	
	/**
	 * 垂直翻转
	 */
	function flipV() {
		$this->_flip_y ++;
	}
	
	/**
	 * 设置剪切类型
	 *
	 * @param
	 *       	 (类型) (参数名) (描述)
	 */
	function setCutType($type) {
		$this->cut_type = ( int ) $type;
	}
	
	/**
	 * 设置图片剪切
	 *
	 * @param $width integer
	 *       	 矩形剪切
	 */
	function setRectangleCut($width, $height) {
		$this->fill_w = ( int ) $width;
		$this->fill_h = ( int ) $height;
	}
	
	/**
	 * 设置源图剪切起始坐标点
	 *
	 * @param
	 *       	 (类型) (参数名) (描述)
	 */
	function setSrcCutPosition($x, $y) {
		$this->src_x = ( int ) $x;
		$this->src_y = ( int ) $y;
	}
	
	/**
	 * 创建图片,主函数
	 *
	 * @param $a integer
	 *       	 当缺少第二个参数时，此参数将用作百分比，
	 *       	 否则作为宽度值
	 * @param $b integer
	 *       	 图片缩放后的高度
	 */
	function createImg($a, $b = null) {
		$num = func_num_args ();
		if (1 == $num) {
			$r = ( int ) $a;
			if ($r < 1) {
				$this->debug = "图片缩放比例不得小于1";
				return false;
				// die("图片缩放比例不得小于1");
			}
			$this->img_scale = $r;
			$this->_setNewImgSize ( $r );
		}
		
		if (2 == $num) {
			$w = ( int ) $a;
			$h = ( int ) $b;
			if (0 == $w) {
				$this->debug = "目标宽度不能为0";
				return false;
				// die("目标宽度不能为0");
			}
			if (0 == $h) {
				$this->debug = "目标高度不能为0";
				return false;
				// die("目标高度不能为0");
			}
			$this->_setNewImgSize ( $w, $h );
		}
		
		if ($this->_flip_x % 2 != 0) {
			$this->_flipH ( $this->h_src );
		}
		
		if ($this->_flip_y % 2 != 0) {
			$this->_flipV ( $this->h_src );
		}
		$this->_createMask ();
		$this->_output ();
		
		// 释放
		if (imagedestroy ( $this->h_src ) && imagedestroy ( $this->h_dst )) {
			Return "ok";
		} else {
			Return "error";
		}
	}
	
	/**
	 * 生成水印,调用了生成水印文字和水印图片两个方法
	 */
	function _createMask() {
		if ($this->mask_word) {
			// 获取字体信息
			$this->_setFontInfo ();
			
			if ($this->_isFull ()) {
				$this->debug = "水印文字过大";
				return false;
				// die("水印文字过大");
			} else {
				$this->h_dst = imagecreatetruecolor ( $this->dst_w, $this->dst_h );
				$white = ImageColorAllocate ( $this->h_dst, 255, 255, 255 );
				imagefilledrectangle ( $this->h_dst, 0, 0, $this->dst_w, $this->dst_h, $white ); // 填充背景色
				$this->_drawBorder ();
				imagecopyresampled ( $this->h_dst, $this->h_src, $this->start_x, $this->start_y, $this->src_x, $this->src_y, $this->fill_w, $this->fill_h, $this->copy_w, $this->copy_h );
				$this->_createMaskWord ( $this->h_dst );
			}
		}
		
		if ($this->mask_img) {
			$this->_loadMaskImg (); // 加载时，取得宽高
			
			if ($this->_isFull ()) {
				// 将水印生成在原图上再拷
				$this->_createMaskImg ( $this->h_src );
				$this->h_dst = imagecreatetruecolor ( $this->dst_w, $this->dst_h );
				$white = ImageColorAllocate ( $this->h_dst, 255, 255, 255 );
				imagefilledrectangle ( $this->h_dst, 0, 0, $this->dst_w, $this->dst_h, $white ); // 填充背景色
				$this->_drawBorder ();
				imagecopyresampled ( $this->h_dst, $this->h_src, $this->start_x, $this->start_y, $this->src_x, $this->src_y, $this->fill_w, $this->start_y, $this->copy_w, $this->copy_h );
			} else {
				// 创建新图并拷贝
				$this->h_dst = imagecreatetruecolor ( $this->dst_w, $this->dst_h );
				$white = ImageColorAllocate ( $this->h_dst, 255, 255, 255 );
				imagefilledrectangle ( $this->h_dst, 0, 0, $this->dst_w, $this->dst_h, $white ); // 填充背景色
				$this->_drawBorder ();
				imagecopyresampled ( $this->h_dst, $this->h_src, $this->start_x, $this->start_y, $this->src_x, $this->src_y, $this->fill_w, $this->fill_h, $this->copy_w, $this->copy_h );
				$this->_createMaskImg ( $this->h_dst );
			}
		}
		
		if (empty ( $this->mask_word ) && empty ( $this->mask_img )) {
			$this->h_dst = imagecreatetruecolor ( $this->dst_w, $this->dst_h );
			$white = ImageColorAllocate ( $this->h_dst, 255, 255, 255 );
			imagefilledrectangle ( $this->h_dst, 0, 0, $this->dst_w, $this->dst_h, $white ); // 填充背景色
			$this->_drawBorder ();
			
			imagecopyresampled ( $this->h_dst, $this->h_src, $this->start_x, $this->start_y, $this->src_x, $this->src_y, $this->fill_w, $this->fill_h, $this->copy_w, $this->copy_h );
		}
	}
	
	/**
	 * 画边框
	 */
	function _drawBorder() {
		if (! empty ( $this->img_border_size )) {
			$c = $this->_parseColor ( $this->img_border_color );
			$color = ImageColorAllocate ( $this->h_src, $c [0], $c [1], $c [2] );
			imagefilledrectangle ( $this->h_dst, 0, 0, $this->dst_w, $this->dst_h, $color ); // 填充背景色
		}
	}
	
	/**
	 * 生成水印文字
	 */
	function _createMaskWord($src) {
		$this->_countMaskPos ();
		$this->_checkMaskValid ();
		
		$c = $this->_parseColor ( $this->mask_font_color );
		$color = imagecolorallocatealpha ( $src, $c [0], $c [1], $c [2], $this->mask_txt_pct );
		
		if (is_numeric ( $this->font )) {
			imagestring ( $src, $this->font, $this->mask_pos_x, $this->mask_pos_y, $this->mask_word, $color );
		} else {
			imagettftext ( $src, $this->font_size, 0, $this->mask_pos_x, $this->mask_pos_y, $color, $this->font, $this->mask_word );
		}
	}
	
	/**
	 * 生成水印图
	 */
	function _createMaskImg($src) {
		$this->_countMaskPos ();
		$this->_checkMaskValid ();
		imagecopymerge ( $src, $this->h_mask, $this->mask_pos_x, $this->mask_pos_y, 0, 0, $this->mask_w, $this->mask_h, $this->mask_img_pct );
		
		imagedestroy ( $this->h_mask );
	}
	
	/**
	 * 加载水印图
	 */
	function _loadMaskImg() {
		$mask_type = $this->_getImgType ( $this->mask_img );
		$this->_checkValid ( $mask_type );
		
		// file_get_contents函数要求php版本>4.3.0
		$src = '';
		if (function_exists ( "file_get_contents" )) {
			$src = file_get_contents ( $this->mask_img );
		} else {
			$handle = fopen ( $this->mask_img, "r" );
			while ( ! feof ( $handle ) ) {
				$src .= fgets ( $fd, 4096 );
			}
			fclose ( $handle );
		}
		if (empty ( $this->mask_img )) {
			$this->debug = "水印图片为空";
			return false;
			// die("水印图片为空");
		}
		$this->h_mask = ImageCreateFromString ( $src );
		$this->mask_w = $this->getImgWidth ( $this->h_mask );
		$this->mask_h = $this->getImgHeight ( $this->h_mask );
	}
	
	/**
	 * 图片输出
	 */
	function _output() {
		$img_type = $this->img_type;
		$func_name = $this->all_type [$img_type] ['output'];
		if (function_exists ( $func_name )) {
			// 判断浏览器,若是IE就不发送头
			if (isset ( $_SERVER ['HTTP_USER_AGENT'] )) {
				$ua = strtoupper ( $_SERVER ['HTTP_USER_AGENT'] );
				if (! preg_match ( '/^.*MSIE.*\)$/i', $ua )) {
					header ( "Content-type:$img_type" );
				}
			}
			try {
				$func_name ( $this->h_dst, $this->dst_img, $this->img_display_quality );
			} catch ( Exception $e ) {
				return false;
			}
		} else {
			return false;
		}
	}
	
	/**
	 * 分析颜色
	 *
	 * @param $color string
	 *       	 十六进制颜色
	 */
	function _parseColor($color) {
		$arr = array ();
		for($ii = 1; $ii < strlen ( $color ); $ii ++) {
			$arr [] = hexdec ( substr ( $color, $ii, 2 ) );
			$ii ++;
		}
		
		Return $arr;
	}
	
	/**
	 * 计算出位置坐标
	 */
	function _countMaskPos() {
		if ($this->_isFull ()) {
			switch ($this->mask_position) {
				case 1 :
					// 左上
					$this->mask_pos_x = $this->mask_offset_x + $this->img_border_size;
					$this->mask_pos_y = $this->mask_offset_y + $this->img_border_size;
					break;
				
				case 2 :
					// 左下
					$this->mask_pos_x = $this->mask_offset_x + $this->img_border_size;
					$this->mask_pos_y = $this->src_h - $this->mask_h - $this->mask_offset_y;
					break;
				
				case 3 :
					// 右上
					$this->mask_pos_x = $this->src_w - $this->mask_w - $this->mask_offset_x;
					$this->mask_pos_y = $this->mask_offset_y + $this->img_border_size;
					break;
				
				case 4 :
					// 右下
					$this->mask_pos_x = $this->src_w - $this->mask_w - $this->mask_offset_x;
					$this->mask_pos_y = $this->src_h - $this->mask_h - $this->mask_offset_y;
					break;
				
				default :
					// 默认将水印放到右下,偏移指定像素
					$this->mask_pos_x = $this->src_w - $this->mask_w - $this->mask_offset_x;
					$this->mask_pos_y = $this->src_h - $this->mask_h - $this->mask_offset_y;
					break;
			}
		} else {
			switch ($this->mask_position) {
				case 1 :
					// 左上
					$this->mask_pos_x = $this->mask_offset_x + $this->img_border_size;
					$this->mask_pos_y = $this->mask_offset_y + $this->img_border_size;
					break;
				
				case 2 :
					// 左下
					$this->mask_pos_x = $this->mask_offset_x + $this->img_border_size;
					$this->mask_pos_y = $this->dst_h - $this->mask_h - $this->mask_offset_y - $this->img_border_size;
					break;
				
				case 3 :
					// 右上
					$this->mask_pos_x = $this->dst_w - $this->mask_w - $this->mask_offset_x - $this->img_border_size;
					$this->mask_pos_y = $this->mask_offset_y + $this->img_border_size;
					break;
				
				case 4 :
					// 右下
					$this->mask_pos_x = $this->dst_w - $this->mask_w - $this->mask_offset_x - $this->img_border_size;
					$this->mask_pos_y = $this->dst_h - $this->mask_h - $this->mask_offset_y - $this->img_border_size;
					break;
				
				default :
					// 默认将水印放到右下,偏移指定像素
					$this->mask_pos_x = $this->dst_w - $this->mask_w - $this->mask_offset_x - $this->img_border_size;
					$this->mask_pos_y = $this->dst_h - $this->mask_h - $this->mask_offset_y - $this->img_border_size;
					break;
			}
		}
	}
	
	/**
	 * 设置字体信息
	 */
	function _setFontInfo() {
		if (is_numeric ( $this->font )) {
			$this->font_w = imagefontwidth ( $this->font );
			$this->font_h = imagefontheight ( $this->font );
			
			// 计算水印字体所占宽高
			$word_length = strlen ( $this->mask_word );
			$this->mask_w = $this->font_w * $word_length;
			$this->mask_h = $this->font_h;
		} else {
			$arr = imagettfbbox ( $this->font_size, 0, $this->font, $this->mask_word );
			$this->mask_w = abs ( $arr [0] - $arr [2] );
			$this->mask_h = abs ( $arr [7] - $arr [1] );
		}
	}
	
	/**
	 * 设置新图尺寸
	 *
	 * @param $img_w integer
	 *       	 目标宽度
	 * @param $img_h integer
	 *       	 目标高度
	 */
	function _setNewImgSize($img_w, $img_h = null) {
		$num = func_num_args ();
		
		// 宽度一定，高度等比缩放
		if (1 == $num) {
			$w_b = $this->src_w / $img_w;
			if ($w_b >= 1) {
				$this->src_x = 0;
				$this->copy_w = $this->src_w;
			} else {
				$this->src_x = - ($img_w - $this->src_w) / 2;
				$this->copy_w = $this->src_w + ($img_w - $this->src_w);
			}
			$this->src_y = 0;
			$this->copy_h = $this->src_h;
			
			$this->fill_w = $img_w - $this->img_border_size * 2;
			$this->fill_h = $this->src_h / ($this->src_w / $img_w) - $this->img_border_size * 2;
			
			// 目标尺寸
			$this->dst_w = $this->fill_w + $this->img_border_size * 2;
			$this->dst_h = $this->fill_h + $this->img_border_size * 2;
		}
		
		if (2 == $num) {
			$fill_w = ( int ) $img_w - $this->img_border_size * 2;
			$fill_h = ( int ) $img_h - $this->img_border_size * 2;
			if ($fill_w < 0 || $fill_h < 0) {
				$this->debug = "图片边框过大，已超过了图片的宽度";
				return false;
				// die("图片边框过大，已超过了图片的宽度");
			}
			$rate_w = $this->src_w / $fill_w;
			$rate_h = $this->src_h / $fill_h;
			
			switch ($this->cut_type) {
				case 0 :
					// 如果原图大于缩略图，产生缩小，否则不缩小
					if ($rate_w < 1 && $rate_h < 1) {
						$this->fill_w = ( int ) $this->src_w;
						$this->fill_h = ( int ) $this->src_h;
					} else {
						if ($rate_w >= $rate_h) {
							$this->fill_w = ( int ) $fill_w;
							$this->fill_h = round ( $this->src_h / $rate_w );
						} else {
							$this->fill_w = round ( $this->src_w / $rate_h );
							$this->fill_h = ( int ) $fill_h;
						}
					}
					
					$this->src_x = 0;
					$this->src_y = 0;
					
					$this->copy_w = $this->src_w;
					$this->copy_h = $this->src_h;
					
					// 目标尺寸
					$this->dst_w = $this->fill_w + $this->img_border_size * 2;
					$this->dst_h = $this->fill_h + $this->img_border_size * 2;
					break;
				
				// 自动裁切
				case 1 :
					// 如果图片是缩小剪切才进行操作
					if ($rate_w >= 1 && $rate_h >= 1) {
						if ($this->src_w > $this->src_h) {
							$src_x = round ( $this->src_w - $this->src_h ) / 2;
							$this->setSrcCutPosition ( $src_x, 0 );
							$this->setRectangleCut ( $fill_h, $fill_h );
							
							$this->copy_w = $this->src_h;
							$this->copy_h = $this->src_h;
						
						} elseif ($this->src_w < $this->src_h) {
							$src_y = round ( $this->src_h - $this->src_w ) / 2;
							$this->setSrcCutPosition ( 0, $src_y );
							$this->setRectangleCut ( $fill_w, $fill_h );
							
							$this->copy_w = $this->src_w;
							$this->copy_h = $this->src_w;
						} else {
							$this->setSrcCutPosition ( 0, 0 );
							$this->copy_w = $this->src_w;
							$this->copy_h = $this->src_w;
							$this->setRectangleCut ( $fill_w, $fill_h );
						}
					} else {
						$this->setSrcCutPosition ( 0, 0 );
						$this->setRectangleCut ( $this->src_w, $this->src_h );
						
						$this->copy_w = $this->src_w;
						$this->copy_h = $this->src_h;
					}
					
					// 目标尺寸
					$this->dst_w = $this->fill_w + $this->img_border_size * 2;
					$this->dst_h = $this->fill_h + $this->img_border_size * 2;
					
					break;
				
				// 手工裁切
				case 2 :
					$this->copy_w = $this->fill_w;
					$this->copy_h = $this->fill_h;
					
					// 目标尺寸
					$this->dst_w = $this->fill_w + $this->img_border_size * 2;
					$this->dst_h = $this->fill_h + $this->img_border_size * 2;
					
					break;
				
				// 手工裁切并缩小
				case 3 :
					$w_b = $this->src_w / $fill_w;
					$h_b = $this->src_h / $fill_h;
					
					// 如果原图大于缩略图，产生缩小，否则不缩小
					if ($w_b > 1 && $h_b > 1) {
						// 如果宽度比大于高度比，则对宽度进行截取
						if ($w_b > $h_b) {
							// 宽度要削减的数量
							$cut_lang = $this->src_w - $fill_w * $this->src_h / $fill_h;
							$this->src_x = 0 + round ( $cut_lang / 2 );
							$this->src_y = 0;
							
							$this->copy_w = $this->src_w - round ( $cut_lang );
							$this->copy_h = $this->src_h;
						
						} 						// 如果高度比大于宽度比，则对高度进行截取
						else {
							// 高度要削减的数量
							$cut_lang = $this->src_h - $fill_h * $this->src_w / $fill_w;
							$this->src_x = 0;
							$this->src_y = 0 + round ( $cut_lang / 2 );
							
							$this->copy_w = $this->src_w;
							$this->copy_h = $this->src_h - round ( $cut_lang );
						}
					} else {
						
						if ($w_b >= 1) {
							$this->src_x = 0;
							$this->copy_w = $this->src_w;
						} else {
							$this->src_x = - ($fill_w - $this->src_w) / 2;
							$this->copy_w = $this->src_w + ($fill_w - $this->src_w);
						}
						if ($h_b >= 1) {
							$this->src_y = 0;
							$this->copy_h = $this->src_h;
						} else {
							$this->src_y = - ($fill_h - $this->src_h) / 2;
							$this->copy_h = $this->src_h + ($fill_h - $this->src_h);
						}
					}
					$this->fill_w = ( int ) $img_w - $this->img_border_size * 2;
					$this->fill_h = ( int ) $img_h - $this->img_border_size * 2;
					
					// 目标尺寸
					$this->dst_w = ( int ) $img_w;
					$this->dst_h = ( int ) $img_h;
					break;
				
				default :
					break;
			
			}
		}
		
		// 目标文件起始坐标
		$this->start_x = $this->img_border_size;
		$this->start_y = $this->img_border_size;
	}
	
	/**
	 * 检查水印图是否大于生成后的图片宽高
	 */
	function _isFull() {
		Return ($this->mask_w + $this->mask_offset_x > $this->fill_w || $this->mask_h + $this->mask_offset_y > $this->fill_h) ? true : false;
	}
	
	/**
	 * 检查水印图是否超过原图
	 */
	function _checkMaskValid() {
		if ($this->mask_w + $this->mask_offset_x > $this->src_w || $this->mask_h + $this->mask_offset_y > $this->src_h) {
			$this->debug = "水印图片尺寸大于原图，请缩小水印图";
			return false;
			// die("水印图片尺寸大于原图，请缩小水印图");
		}
	}
	
	/**
	 * 取得图片类型
	 *
	 * @param $file_path string
	 *       	 文件路径
	 */
	function _getImgType($file_path) {
		$type_list = array ("1" => "gif", "2" => "jpg", "3" => "png", "4" => "swf", "5" => "psd", "6" => "bmp", "15" => "wbmp" );
		if (file_exists ( $file_path )) {
			$img_info = @getimagesize ( $file_path );
			if (isset ( $type_list [$img_info [2]] )) {
				Return $type_list [$img_info [2]];
			}
		} else {
			$this->debug = "文件不存在,不能取得文件类型!";
			return false;
			// die("文件不存在,不能取得文件类型!");
		}
	}
	
	/**
	 * 检查图片类型是否合法,调用了array_key_exists函数，此函数要求
	 * php版本大于4.1.0
	 *
	 * @param $img_type string
	 *       	 文件类型
	 */
	function _checkValid($img_type) {
		if (! array_key_exists ( $img_type, $this->all_type )) {
			Return false;
		}
	}
	
	/**
	 * 按指定路径生成目录
	 *
	 * @param $path string
	 *       	 路径
	 */
	function _mkdirs($path) {
		$adir = explode ( '/', $path );
		$dirlist = '';
		$rootdir = array_shift ( $adir );
		if (($rootdir != '.' || $rootdir != '..') && ! file_exists ( $rootdir )) {
			@mkdir ( $rootdir );
		}
		foreach ( $adir as $key => $val ) {
			if ($val != '.' && $val != '..') {
				$dirlist .= "/" . $val;
				$dirpath = $rootdir . $dirlist;
				if (! file_exists ( $dirpath )) {
					@mkdir ( $dirpath );
					@chmod ( $dirpath, 0777 );
				}
			}
		}
	}
	
	/**
	 * 垂直翻转
	 *
	 * @param $src string
	 *       	 图片源
	 */
	function _flipV($src) {
		$src_x = $this->getImgWidth ( $src );
		$src_y = $this->getImgHeight ( $src );
		
		$new_im = imagecreatetruecolor ( $src_x, $src_y );
		for($y = 0; $y < $src_y; $y ++) {
			imagecopy ( $new_im, $src, 0, $src_y - $y - 1, 0, $y, $src_x, 1 );
		}
		$this->h_src = $new_im;
	}
	
	/**
	 * 水平翻转
	 *
	 * @param $src string
	 *       	 图片源
	 */
	function _flipH($src) {
		$src_x = $this->getImgWidth ( $src );
		$src_y = $this->getImgHeight ( $src );
		
		$new_im = imagecreatetruecolor ( $src_x, $src_y );
		for($x = 0; $x < $src_x; $x ++) {
			imagecopy ( $new_im, $src, $src_x - $x - 1, 0, $x, 0, 1, $src_y );
		}
		$this->h_src = $new_im;
	}
	
	/**
	 * 保存文件
	 *
	 * @param $src string
	 *       	 图片源
	 */
	function GrabImage($url, $filepath, $filename = "") {
		if (file_exists ( $filepath ) == false) 		// 判断目录是否存在，如没有自动建立
		{
			makeDir ( $filepath );
		}
		if ($url == "")
			return "请输入原始路径！";
		
		ob_start ();
		readfile ( $url );
		$img = ob_get_contents ();
		ob_end_clean ();
		// dump($filepath.DIRECTORY_SEPARATOR.$filename);exit;
		$fp2 = @fopen ( $filepath . DIRECTORY_SEPARATOR . $filename, "a" );
		fwrite ( $fp2, $img );
		fclose ( $fp2 );
		
		return $filepath . DIRECTORY_SEPARATOR . $filename;
	}
}
?>